Medium-deep natural gas reservoir filling path tracing method and equipment thereof

Abstract

The invention belongs to the field of oil and gas exploration and development, and mainly relates to a medium-deep natural gas reservoir filling path tracking method and equipment thereof. The invention mainly solves a problem that biomarker components above C8 cannot be acquired by conventional steel cylinder sampling at present. The method mainly comprises the steps of screening natural gas maturity tracing parameters suitable for high-maturity and over-maturity states; acquiring a biomarker of tri-methylnaphthalene (TMN) in the natural gas at the wellhead; and calculating parameter values, and tracing a natural gas reservoir filling path. The equipment comprise a pressure valve, a high pressure resistant stainless steel flexible hose, a connection stainless steel tube, a pressure stabilizing valve, a connection rubber tube, a four-way glass tube, a rubber flexible hose (8), a natural gas inlet, a high pressure resistant continuous U-shaped glass tube, a natural gas outlet, a rubber flexible hose (14), a stainless steel tube, a corrosion resistant plastic drum and an alkali solution. The method and the equipment provided by the invention can provide a basis for deep natural gas exploration.

Description

technical field [0001] The invention belongs to the field of oil and gas exploration and development, and relates to a method and equipment for discriminating charging paths of medium-deep natural gas reservoirs. Background technique [0002] Due to the rising energy demand and increasing energy pressure, as well as the environmental protection and high efficiency of natural gas resources compared with coal and oil, natural gas energy has received more and more attention. Natural gas plays an important role in oil and gas exploration in China. The main body of China's economically valuable unproved oil and gas resources is still located in the middle and deep layers of large superimposed basins, which will determine the future development of the oil industry. [0003] Taking the Sichuan Basin in my country as an example, almost all the crude oil in the deep Sinian-Lower Paleozoic paleo-oil reservoirs in the Sichuan Basin has been cracked into solid bitumen and natural gas, ...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that the current missing method of natural gas filling route mainly relies on information such as natural gas physical properties, methane carbon isotope, etc., and conventional steel cylinder sampling cannot collect biomarker components above C8, a method for collecting biomarker compounds above C8 is provided That is, the method and equipment for tracing the charging pathways of medium-deep natural gas reservoirs, so as to directly trace the charging pathways of medium-deep natural gas reservoirs, provide reliable information for the genesis and accumulation mechanism of medium-deep natural gas reservoirs, and provide a basis for mid-deep natural gas exploration

Images